EP2014146B2 - Soil cultivation device - Google Patents

Soil cultivation device Download PDF

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Publication number
EP2014146B2
EP2014146B2 EP07112352.5A EP07112352A EP2014146B2 EP 2014146 B2 EP2014146 B2 EP 2014146B2 EP 07112352 A EP07112352 A EP 07112352A EP 2014146 B2 EP2014146 B2 EP 2014146B2
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EP
European Patent Office
Prior art keywords
tool
tool holder
piercing
soil
pivot axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07112352.5A
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German (de)
French (fr)
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EP2014146A1 (en
EP2014146B1 (en
Inventor
Marinus Reincke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Redexim Handel en Exploitatie Maatschappij BV
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Redexim Handel en Exploitatie Maatschappij BV
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38903867&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2014146(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Redexim Handel en Exploitatie Maatschappij BV filed Critical Redexim Handel en Exploitatie Maatschappij BV
Priority to EP07112352.5A priority Critical patent/EP2014146B2/en
Priority to AT07112352T priority patent/ATE544331T1/en
Priority to DK07112352.5T priority patent/DK2014146T4/en
Priority to CN2008801020344A priority patent/CN101801171B/en
Priority to PCT/EP2008/059191 priority patent/WO2009007466A1/en
Priority to JP2010515531A priority patent/JP5366223B2/en
Priority to US12/452,635 priority patent/US8602120B2/en
Priority to CA2693653A priority patent/CA2693653C/en
Priority to EP08786143A priority patent/EP2166829A1/en
Publication of EP2014146A1 publication Critical patent/EP2014146A1/en
Publication of EP2014146B1 publication Critical patent/EP2014146B1/en
Publication of EP2014146B2 publication Critical patent/EP2014146B2/en
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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B45/00—Machines for treating meadows or lawns, e.g. for sports grounds
    • A01B45/02—Machines for treating meadows or lawns, e.g. for sports grounds for aerating
    • A01B45/023—Perforators comprising spiking tools actively driven in a reciprocating movement through a crankshaft or eccentric mechanism

Definitions

  • the invention relates to a mobile soil cultivation device for introducing cavities into the soil according to the preamble of claim 1.
  • a known soil cultivation device has a machine frame, a drive for at least one up and down movable lancing tool, wherein the lancing tool pierceable into the ground and is pulled out again.
  • a guide element e.g. a support arm, movably guided for at least one piercing tool.
  • the piercing tool is located prior to piercing in a starting position below a predetermined piercing angle.
  • a tool holder holds one or more piercing tools.
  • the tool holder is mounted about a first pivot axis in the guide member which is movable up and down by the drive to engage during ground engagement, i. under force, to allow pivoting of the piercing tool relative to the guide element.
  • a device exerts a restoring moment acting on the first pivot axis on the tool holder, so that the piercing tool pivots back into the starting position after it has been pulled out of the ground.
  • Such devices are used to introduce with the help of piercing tools cavities in the soil, wherein in the depth regions of the bottom slit-shaped cavities are introduced and remain on the surface smallest possible holes.
  • the cavities enable better drainage of water and improve soil aeration, and soil loosening improves plant growth, especially of grasses.
  • a tillage apparatus which has two parallelogrammartig guided support arms which pivotally hold a tool holder at one end and which are pivotally mounted at the other end on the machine frame.
  • the push rod of the crank mechanism is articulated to the tool holder and drives it, so that it performs an up and down movement.
  • One of the two support arms is variable in length and includes a return spring with a stop. As long as the piercing tool is located outside the ground, the support arm is due to the spring force against the stop. When punctured piercing tool and forward movement of the tillage device pivots the piercing tool with the tool holder against the direction of travel and the variable length support arm is extended against the spring force.
  • spring elements are used, which exert a restoring moment on the piercing tools, so that the piercing tools, once they are outside the ground, move back to the starting position.
  • the position is referred to below, which has the at least one piercing tool just before piercing.
  • the moment of inertia of the tool holder and piercing tool counteracts the restoring moment of the spring.
  • spring elements with high spring stiffness are used to move the piercing tools back to the starting position. Due to the spring elements with high spring stiffness, however, there is an increased risk that the piercing tools, if they are still within the soil, instead of the desired small holes, slots can bring into the soil surface.
  • the invention is therefore an object of the invention to provide a device of the type described above, in which the risk of slit formation is reduced.
  • the invention advantageously provides that the overall center of gravity of the tool holder and the at least one piercing tool is arranged in relation to the first pivot axis such that the moment of inertia of the tool holder and piercing tool counteracting the restoring moment is compensated or overcompensated.
  • the overall center of gravity of the tool holder and the at least one piercing tool can be arranged in relation to the first pivot axis such that the moment of inertia of tool holder and piercing tool counteracting the restoring moment is overcompensated such that the moment of inertia acting around the first pivot axis forms at least part of the restoring moment.
  • This embodiment has the advantage that either a spring element with lower spring stiffness can be used or that even no spring element is needed because the moment of inertia counteracting the restoring moment is compensated by the tool holder and piercing tool or is overcompensated such that the moment of inertia acting around the first pivot axis at least forms a part of the restoring moment.
  • Another advantage is that the number of parts is reduced and thereby the production costs are considerably reduced. In addition, the service life can be increased and the maintenance work can be reduced.
  • An additional advantage is that, when stops are provided to limit the return movement back to the starting position, the impact load on the machine frame, the machine elements and in particular the bearings can be reduced.
  • an additional mass is coupled to the tool holder, preferably connected to this rotationally fixed.
  • the total center of gravity of additional mass, tool holder and the at least one piercing tool is arranged in relation to the first pivot axis such that the moment of inertia counteracting the restoring moment of the tool holder, additional mass and the at least one piercing tool is compensated or overcompensated.
  • the overall center of gravity of additional mass, tool holder and the at least one piercing tool can be arranged in relation to the first pivot axis such that the moment of inertia counteracting the restoring moment of tool holder, additional mass and the at least one piercing tool is overcompensated such that the moment of inertia acting around the first pivot axis at least one Part of the restoring moment forms.
  • the overall center of gravity of additional mass, tool holder and the at least one piercing tool can lie on the first pivot axis.
  • the distance, preferably the horizontal distance, of the overall center of gravity of the tool holder and the at least one piercing tool or the distance, preferably the horizontal distance, of the total center of gravity of the additional mass, tool holder and the at least one piercing tool can be adjusted from the first pivot axis is, preferably centrally adjustable for all tool holder.
  • the guide element may be a support arm, which is pivotally mounted in a second pivot bearing on the machine frame.
  • This support arm may be formed variable in length against a spring force. This has the advantage that in addition the risk of slit formation can be reduced.
  • At least one helical or spiral metallic tension or compression spring can generate the spring force counteracting the extension of the support arm.
  • the spring preferably has a degressive spring characteristic.
  • At least one tension or compression spring element or a spring damper element can be arranged next to the support arm, preferably parallel to the support arm.
  • the spring element allows pivoting of the tool holder to the first pivot axis and exerts at omitting the ground engagement at least a portion of the restoring torque on the tool holder, so that the piercing tool pivots back after pulling out of the ground back to the starting position.
  • the tension or compression spring element or the spring damper element is arranged on the machine frame, that it exerts a high restoring torque on the tool holder when the piercing tool is located outside the ground, and that there is a small restoring moment on the tool holder when the piercing tool is in the ground.
  • a torsion element is arranged between the tool holder and guide element, which permits pivoting of the tool holder relative to the guide element and exerts at least a portion of the restoring torque on the tool holder when the action of force ceases, so that the piercing tool acts on the tool holder Pulling out of the ground swings back to the starting position.
  • the torsion element may consist of at least one elastomer element, an elastomer composite element or a helical or spiral metallic torsion spring.
  • the torsion element has at least two magnetic elements, wherein the at least two magnetic elements are aligned with each other so that they allow pivoting of the tool holder about the first pivot axis and at least a portion of the restoring torque when the ground engagement Exercise on the tool holder, so that the piercing tool pivots back after swinging out of the ground back to the starting position.
  • the magnetic elements can consist of permanent magnets or of electromagnets, the electromagnets being activatable or deactivatable as a function of the movement phase.
  • Fig. 1 shows a side view of a mobile tillage device that is self-propelled or can be pulled by means of a tractor.
  • This tillage device 6 has a machine frame 38, on which a plurality of guide elements 30 by a drive 36 movable up and down lancing tools 1 are pivotally mounted.
  • the piercing tools 1 are pressed alternately into the ground 8 due to the up and down movement and perform in the bottom 8 due to the forward movement of the soil cultivation device 6 from a tilting movement. Thereby, the bottom 8 is broken below the piercing hole, whereby, for example, the drainage of the bottom 8 is improved. In this case, the puncture hole in the ground surface should remain as small as possible despite the driving speed of the tillage device 6.
  • the at least one piercing tool 1 is preferably fastened by means of a holding device 4 in a tool holder 2. Puncture tools 1 of different length and shape and diameter can be attached to the tool holder 2, which is guided by a guide member 30.
  • the guide element 30 preferably carries driven by a crank drive 36 an up and down movement. Alternatively, it is also possible to drive the guide element 30 hydraulically or electrically.
  • It can be several, preferably juxtaposed standing tools 1 or juxtaposed groups of piercing tools 1 are driven.
  • the piercing tools 1, or groups of piercing tools 1 are preferably driven out of phase.
  • Fig. 2 shows a side view of an inventive embodiment.
  • a crank mechanism 36 drives via a push rod 34, the guide member 30, which has the shape of a support arm.
  • the push rod 34 is mounted in a first pivot bearing 10 to a guide member 30.
  • the guide member 30 is pivotally mounted in a second pivot bearing 26 on the machine frame 38.
  • a tool holder 2 is pivotally mounted about a first pivot axis 12.
  • the tool holder 2 has two work oppositely projecting arms 2a, 2b.
  • the arm 2a of the tool holder 2 has a fastening device 4, with which at least one piercing tool 1 can be rotatably connected to the tool holder 2.
  • a coupling arm 24 is mounted, which is mounted at its one end in an adjusting device 40.
  • the adjusting device 40 is rotatably connected to the machine frame 38.
  • a stop 22 is pivotally connected to the coupling arm 24.
  • the stopper 22 in turn is hinged to the guide member 30 pivotally.
  • the position of the stop 22 can be adjusted by means of the adjusting device 40. With the position of the stop 22, the starting position of the at least one piercing tool 1 is set, since the at least one piercing tool 1 and / or the tool holder 2 abut against the stop 22 at least before piercing.
  • the starting position for all juxtaposed lancing tools or groups of puncturing tools can be adjusted centrally.
  • the adjusting device 40 can be operated electrically, hydraulically or pneumatically.
  • punctured piercing tool 1 and further movement of the tillage device 6 in the direction of travel A the at least one piercing tool 1 is pivoted about the first pivot axis 12.
  • the speeds v B and v C , with which move the points B and C of the guide member 30 up and down, are for a constant angular velocity of the crank mechanism 36 in Fig. 3 shown in simplified form.
  • the angular position of the crank pin 16 is indicated on the x-axis.
  • the points B and C of the guide member 30 reach the bottom dead center UT when the crank pin has already exceeded 180 °. This is the case because on the one hand the axis of rotation of the crank mechanism 36 and the first pivot bearing 10 are arranged horizontally offset from each other and on the other hand, the points B and C of the guide member 30, due to the pivotal movement of the guide member 30 about the second pivot bearing 26, perform no exact vertical movement ,
  • Fig. 3 are also the acceleration curves a B , a C of the points B and C of the Guiding element 30 shown.
  • the accelerations a B , a C reach their maximum value.
  • the maximum values of the accelerations a B , a C exceed the gravitational acceleration by a multiple.
  • the piercing tools 1 are located in the marked F area outside the soil. In this area, a very high acceleration in a vertical upward direction acts on the moving along in the up and down movement masses, that is also on the tool holder 2 and the at least one piercing tool 1. If now the arm 2b of the tool holder 2 off Fig.
  • Fig. 2 can alternatively be carried out so that not the tool holder 2 has two arms, but the at least one piercing tool 1.
  • the total center of gravity of the tool holder 2 and the at least one piercing tool 1 with the two arms is then also arranged such that the about the first pivot axis 12th acting moment of inertia of tool holder 2 and piercing tool 1 forms at least a portion of the restoring moment.
  • additional mass 44 may also be an additional mass 44 rotatably connected to the tool holder 2 and / or piercing tool 1, so that the total center of gravity of piercing tool 1, additional mass 44 and tool holder 2 is arranged so that the force acting around the first pivot axis 12 moment of inertia of tool holder 2, piercing tool. 1 and additional mass 44 forms at least part of the restoring moment.
  • Fig. 4 shows a similar embodiment as Fig. 2 , with the difference that instead of the coupling arm 24 with stop 22, a spring damper element 42 is arranged parallel to the guide element.
  • the spring damper element 42 is pivotally mounted on one side on the machine frame 38 and on the opposite side of the tool holder 2.
  • the spring damper element 42 permits a pivoting of the tool holder 2 about the first pivot axis 12 and exerts at least a portion of the restoring torque on the tool holder 2 when the ground engagement is removed, so that the piercing tool 1 pivots back out of the bottom 8 into the starting position after being pulled out.
  • the arm 2b of the tool holder 2 has a position adjustment device 46 and an additional mass 44.
  • the distance of the additional mass 44 from the first pivot axis 12 can preferably be adjusted centrally by means of the position adjustment device 46.
  • the position adjustment device 46 has a sensor that can determine the position of the additional mass 44.
  • the position of the additional mass 44 can be adjusted so that the total center of gravity of the tool holder 2, piercing tool 1 and additional mass 44 is arranged in relation to the first pivot axis 12 such that the moment of inertia counteracting the restoring moment of tool holder 2, additional mass 44 and the at least one piercing tool. 1 is compensated or is overcompensated such that the moment of inertia acting around the first pivot axis forms at least a part of the restoring moment.
  • Fig. 5 an embodiment is shown that from the Fig. 2 is similar, with the difference that instead of the spring damper element 42, a torsion element 48, 50, 64 is used.
  • the coaxial with the first pivot axis 12 acting torsion 48, 50, 64 is mounted between the tool holder 2 and the guide member 30.
  • the torsion element 48, 50, 64 Before piercing, the torsion element 48, 50, 64 is unloaded, wherein in the starting position shortly before piercing a predetermined piercing angle of the piercing tool 1 is set.
  • the torsion element 48, 50, 64 allows under the action of force on the piercing tool 1, that is, when piercing the piercing tool 1 and further movement of the tillage device 6 in the direction of travel A, a pivoting of the piercing tool 1 against the direction of travel.
  • the torsion element 48, 50, 64 exerts at least a portion of the restoring torque on the tool holder 2, so that the piercing tool 1 pivots back to the starting position after pulling out ,
  • the torsion element 48, 50, 64 is a co-axial to the first pivot axis 12 extending helical or helical metal torsion spring 48.
  • the one side of the metal spring is connected to the guide member 30 and the other side is rotatably connected to the tool holder 2.
  • a coaxial axle or sleeve-shaped support element for reinforcement. This support element can then likewise be rotatably mounted on the tool holder 2 and on the guide element 30.
  • Fig. 6 shows a modified embodiment of the Fig. 5 in which additionally a coupling arm 24 is pivotally mounted on the tool holder 2 for centrally adjusting the insertion angle.
  • the coupling arm 24 is in direct contact with the stop 22 prior to piercing the bottom 8.
  • the coupling arm 24 is pivotally mounted on the intermediate element 54, which in turn is pivotally mounted on the machine frame 38.
  • the stop 22 can be adjusted centrally with an adjusting device 40, in this case with an eccentric rod, for all piercing tools 1 or groups of piercing tools 1.
  • the stop 22 limits the return movement of the piercing tools 1 back to the starting position.
  • the piercing angle of the piercing tools 1 can be adjusted centrally.
  • the piercing angle can also be adjusted individually.
  • the piercing angle can also be adjusted individually by the stop 22 is attached directly to the guide member 30 or the tool holder 2.
  • the torsion element 48, 50, 64 consists of a metal-elastomer composite element 50, as it is available, for example, from Rosta.
  • the elastomer-metal composite element 50 has a housing 55, which preferably consists of a quadrangular or triangular hollow profile.
  • the elastomer-metal composite element has a central rod 56, which is located in the interior of the housing 55 and also preferably has a quadrangular or triangular cross-section.
  • a generally polygonal cross-section may be used in both the housing 55 and the rod 56.
  • the rod is, for example, arranged at substantially square profiles of the housing 55 and the rod 56, relative to the housing 55 by a rotation angle of 45 °.
  • elastomeric elements 58 are arranged in the corners of the housing 55 and extend substantially over the entire length of the housing 55 and the rod 56. Under the influence of a torque, the rod 56 can be rotated relative to the housing 55. In this case, the elastomer elements 58 are compressed and there is an elastic restoring moment, which forms at least part of the total restoring torque.
  • a larger torsion angle can be used.
  • Fig. 7 shows a further embodiment with a torsion element 48, 50, 64.
  • the torsion element 48, 50, 64 has in this case three magnetic elements.
  • the first magnetic element 60 is located within an axis-shaped holding element 63 and is rotatably connected thereto.
  • the holding member 63 is rotatably connected to the guide member 30.
  • the holding element 63 has a round cross section.
  • the holding element 63 is enclosed by at least one further movable intermediate element 65, which is connected in a rotationally fixed manner to the tool holder 2.
  • the tool holder 2 can be pivoted about the first pivot axis 12 relative to the support member 63 serving as a pivot bearing.
  • two further magnetic elements 61, 62 are arranged opposite one another.
  • the north pole of the second magnetic element 62 on the south pole side of the first magnetic element 60 and the south pole of the third magnetic element 61 on the north pole side of the first magnetic element 60 are arranged ,
  • the tool holder 2 When punctured piercing tool 1 and further movement of the soil cultivation device 6, the tool holder 2 is pivoted against the magnetic element about the first pivot axis 12 relative to the holding member 63. As soon as the piercing tool 1 is outside the bottom, the magnetic restoring moment of the magnetic elements 60, 61, 62, which represents at least a part of the total restoring moment, moves the piercing tool 1 back into its starting position.
  • the magnetic elements 60, 61, 62 may consist of permanent or electromagnets. In the case of an electromagnet, it is possible to turn on the current only in certain phases of movement, e.g. in which the piercing tool 1 is not in contact with the ground 8.
  • the holding element 63, the intermediate element 65, the guide element 30 and the tool holder 2 are preferably made of non-poorly or poorly magnetizable material, such. non-magnetizable steel (submarine steel), high-strength metals, plastic, preferably duroplastic or ceramic material.
  • Fig. 7 the total center of gravity of the tool holder 2, intermediate element 65, second 62 and third 61 magnetic element and the at least one piercing tool 1 is arranged in relation to the first pivot axis 12 such that the moment of inertia counteracting the restoring moment of tool holder 2, intermediate element 65, second 62 and third 61st magnetic element and the at least one piercing tool 1 is compensated or is overcompensated such that the moment of inertia acting around the first pivot axis 12 forms at least part of the restoring torque.
  • Fig. 8 shows a further embodiment in which a damper element 68 is arranged parallel to the guide member 30.
  • the damper element 68 is pivotally mounted on the one hand on the tool holder 2 and on the opposite side of the machine frame 38.
  • a spring 70 is also pivotally mounted on the tool holder 2 and on the opposite side of the machine frame 38. However, the spring 70 is not arranged parallel to the guide element 30.
  • the spring 70 is arranged so that the spring 70 has the largest spring length when the at least one piercing tool 1 is located outside the bottom 8, and has the smallest spring length when the piercing tool 1 is located within the bottom 8.
  • Fig. 9 shows a further embodiment with a two-part extendable guide element 30.
  • a spring element 76 is arranged in the form of a helical or helical compression spring.
  • On the first part 30a of the guide member 30 of the tool holder 2 is pivotally mounted.
  • the second part 30b of the guide element 30 is pivotally mounted on the machine frame 38.
  • the push rod 34 of the crank drive 36 drives the guide element 30 via the second part 30 b of the guide element 30.
  • the spring element 76 is seated on a piston rod 78 connected to the first part 30a of the guide element 30.
  • the two parts 30a, 30b of the guide element 30 are telescopically designed.
  • a piston and adjusting element 82 is provided, which prestresses the spring element 76 in a variably adjustable manner and guides the first part 30a of the guide element 30 within a bore 86 of the second part 30b of the guide element 30.
  • the sleeve-shaped piston and adjusting element 82 has a smooth jacket surface, so that it can serve as a piston element in the bore 86 of the second part 30b of the guide element 30.
  • the piston and adjusting element 82 and / or the piston rod 78 are in direct contact with the second part 30b of the guide element 30 prior to insertion of the at least one piercing tool 1, so that shortly before and during the piercing of the piercing tool 1 into the bottom 8 a direct force transmission without spring element 76 can take place from the second part 30b of the guide member 30 on the first part 30a of the guide member 30 and vice versa.
  • the at least one piercing tool 1 is pivoted. This embodiment reduces the risk that the piercing tools 1 draw in the direction of travel A slots in the ground surface too fast further movement of the tillage device.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Working Implements (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)

Abstract

The device (6) has a piercing tool (1) located in a starting position at a preset piercing angle before piercing. A tool holder (2) is mounted about a pivot axis in a guiding element that is moved up and down by a drive to make pivoting of the tool in relation to the guiding element during engagement with soil (8). An overall centre of gravity of the tool holder and tool is arranged in relation to the axis to partially reduce or compensate or overcompensate moment of inertia of the tool holder and tool so that the moment of inertia forms a part of restoring moment.

Description

Die Erfindung betrifft eine fahrbare Bodenbearbeitungsvorrichtung zum Einbringen von Hohlräumen in den Boden nach dem Oberbegriff des Anspruchs 1.The invention relates to a mobile soil cultivation device for introducing cavities into the soil according to the preamble of claim 1.

Eine bekannte Bodenbearbeitungsvorrichtung weist einen Maschinenrahmen, einen Antrieb für mindestens ein auf- und abbewegbares Stechwerkzeug auf, wobei das Stechwerkzeug in den Boden einstechbar und wieder herausziehbar ist. An dem Maschinenrahmen ist ein Führungselement, z.B. ein Tragarm, für mindestens ein Stechwerkzeug beweglich geführt. Das Stechwerkzeug befindet sich vor dem Einstechen in einer Ausgangslage unter einem vorgegebenen Einstechwinkel. Ein Werkzeughalter hält ein oder mehrere Stechwerkzeuge. Der Werkzeughalter ist um eine erste Schwenkachse in dem von dem Antrieb auf- und abbewegbaren Führungselement gelagert, um während des Bodeneingriffs, d.h. unter Krafteinwirkung, ein Verschwenken des Stechwerkzeugs relativ zu dem Führungselement zu ermöglichen. Bei Wegfall der Krafteinwirkung übt eine Einrichtung ein um die erste Schwenkachse wirkendes Rückstellmoment auf den Werkzeughalter aus, so dass das Stechwerkzeug nach dem Herausziehen aus dem Boden wieder in die Ausgangslage zurückschwenkt.A known soil cultivation device has a machine frame, a drive for at least one up and down movable lancing tool, wherein the lancing tool pierceable into the ground and is pulled out again. On the machine frame is a guide element, e.g. a support arm, movably guided for at least one piercing tool. The piercing tool is located prior to piercing in a starting position below a predetermined piercing angle. A tool holder holds one or more piercing tools. The tool holder is mounted about a first pivot axis in the guide member which is movable up and down by the drive to engage during ground engagement, i. under force, to allow pivoting of the piercing tool relative to the guide element. When the force is eliminated, a device exerts a restoring moment acting on the first pivot axis on the tool holder, so that the piercing tool pivots back into the starting position after it has been pulled out of the ground.

Derartige Vorrichtungen dienen dazu, mit Hilfe von Stechwerkzeugen Hohlräume in den Boden einzubringen, wobei in die Tiefenbereiche des Bodens schlitzförmige Hohlräume eingebracht werden und an der Oberfläche möglichst kleine Löcher verbleiben. Die Hohlräume ermöglichen einen besseren Abfluss von Wasser und verbessern die Bodenbelüftung und durch die Auflockerung des Bodens wird das Pflanzenwachstum, insbesondere von Gräsern, verbessert.Such devices are used to introduce with the help of piercing tools cavities in the soil, wherein in the depth regions of the bottom slit-shaped cavities are introduced and remain on the surface smallest possible holes. The cavities enable better drainage of water and improve soil aeration, and soil loosening improves plant growth, especially of grasses.

Aus der europäischen Offenlegungsschrift EP-A-0037595 ist eine Bodenbearbeitungsvorrichtung bekannt, die zwei parallelogrammartig geführte Tragarme aufweist, die an einem Ende schwenkbar einen Werkzeughalter halten und die am anderen Ende am Maschinenrahmen schwenkbar gelagert sind. Die Schubstange des Kurbeltriebs ist an dem Werkzeughalter angelenkt und treibt diesen an, so dass dieser eine Auf- und Abbewegung ausführt. Einer der beiden Tragarme ist längenveränderlich und beinhaltet eine Rückholfeder mit einem Anschlag. Solange sich das Stechwerkzeug außerhalb des Bodens befindet, liegt der Tragarm aufgrund der Federkraft an dem Anschlag an. Bei eingestochenem Stechwerkzeug und Vorwärtsbewegung der Bodenbearbeitungsvorrichtung verschwenkt das Stechwerkzeug mit dem Werkzeughalter entgegen der Fahrtrichtung und der längenveränderliche Tragarm wird gegen die Federkraft verlängert.From the European patent application EP-A-0037595 a tillage apparatus is known which has two parallelogrammartig guided support arms which pivotally hold a tool holder at one end and which are pivotally mounted at the other end on the machine frame. The push rod of the crank mechanism is articulated to the tool holder and drives it, so that it performs an up and down movement. One of the two support arms is variable in length and includes a return spring with a stop. As long as the piercing tool is located outside the ground, the support arm is due to the spring force against the stop. When punctured piercing tool and forward movement of the tillage device pivots the piercing tool with the tool holder against the direction of travel and the variable length support arm is extended against the spring force.

Bei den bisher bekannten Boden bearbeitungs vorrichtungen werden Federelemente verwendet, die auf die Stechwerkzeuge einen Rückstellmoment ausüben, so dass sich die Stechwerkzeuge, sobald sie sich außerhalb des Bodens befinden, wieder in die Ausgangslage zurückbewegen. Als Ausgangslage wird im Folgenden die Position bezeichnet, die das mindestens eine Stechwerkzeug kurz vor dem Einstechen aufweist. Außerhalb des Bodens wirkt jedoch, aufgrund der Massenträgheit und der Auf- und Abbewegung, das Trägheitsmoment von Werkzeughalter und Stechwerkzeug dem Rückstellmoment der Feder entgegen. Aus diesem Grund werden Federelemente mit hoher Federsteifigkeit verwendet, um die Stechwerkzeuge wieder in die Ausgangslage zurückzubewegen. Aufgrund der Federelemente mit hoher Federsteife besteht jedoch eine erhöhte Gefahr, dass die Stechwerkzeuge, wenn sie sich noch innerhalb des Bodens befinden, anstatt der gewünschten kleinen Löcher, Schlitze in die Bodenoberfläche einbringen können.In the previously known ground processing devices spring elements are used, which exert a restoring moment on the piercing tools, so that the piercing tools, once they are outside the ground, move back to the starting position. As a starting point, the position is referred to below, which has the at least one piercing tool just before piercing. Outside of the ground, however, due to the inertia and the up and down movement, the moment of inertia of the tool holder and piercing tool counteracts the restoring moment of the spring. For this reason, spring elements with high spring stiffness are used to move the piercing tools back to the starting position. Due to the spring elements with high spring stiffness, however, there is an increased risk that the piercing tools, if they are still within the soil, instead of the desired small holes, slots can bring into the soil surface.

Der Erfindung liegt demzufolge die Aufgabe zugrunde, eine Vorrichtung der eingangs beschriebenen Art zu schaffen, bei der die Gefahr der Schlitzbildung reduziert ist.The invention is therefore an object of the invention to provide a device of the type described above, in which the risk of slit formation is reduced.

Zur Lösung dieser Aufgabe dienen die Merkmale des Anspruchs 1.To solve this problem serve the features of claim 1.

Die Erfindung sieht in vorteilhafter Weise vor, dass der Gesamtschwerpunkt von Werkzeughalter und dem mindestens einen Stechwerkzeug in Relation zur ersten Schwenkachse derart angeordnet ist, dass das dem Rückstellmoment entgegenwirkende Trägheitsmoment von Werkzeughalter und Stechwerkzeug kompensiert oder überkompensiert ist.The invention advantageously provides that the overall center of gravity of the tool holder and the at least one piercing tool is arranged in relation to the first pivot axis such that the moment of inertia of the tool holder and piercing tool counteracting the restoring moment is compensated or overcompensated.

Der Gesamtschwerpunkt von Werkzeughalter und dem mindestens einen Stechwerkzeug kann in Relation zur ersten Schwenkachse derart angeordnet sein, dass das dem Rückstellmoment entgegenwirkende Trägheitsmoment von Werkzeughalter und Stechwerkzeug derart überkompensiert ist, dass das um die erste Schwenkachse wirkende Trägheitsmoment zumindest einen Teil des Rückstellmoments bildet.The overall center of gravity of the tool holder and the at least one piercing tool can be arranged in relation to the first pivot axis such that the moment of inertia of tool holder and piercing tool counteracting the restoring moment is overcompensated such that the moment of inertia acting around the first pivot axis forms at least part of the restoring moment.

Diese Ausführungsform hat den Vorteil, dass entweder ein Federelement mit geringerer Federsteifigkeit verwendet werden kann oder dass sogar kein Federelement benötigt wird, da das dem Rückstellmoment entgegenwirkende Trägheitsmoment von Werkzeughalter und Stechwerkzeug kompensiert ist oder derart überkompensiert ist, dass das um die erste Schwenkachse wirkende Trägheitsmoment zumindest einen Teil des Rückstellmoments bildet.This embodiment has the advantage that either a spring element with lower spring stiffness can be used or that even no spring element is needed because the moment of inertia counteracting the restoring moment is compensated by the tool holder and piercing tool or is overcompensated such that the moment of inertia acting around the first pivot axis at least forms a part of the restoring moment.

Ein weiterer Vorteil besteht darin, dass die Anzahl der Teile reduziert ist und dadurch die Herstellungskosten erheblich reduzierbar sind. Zusätzlich kann die Lebensdauer erhöht werden und die Wartungsarbeiten reduziert werden.Another advantage is that the number of parts is reduced and thereby the production costs are considerably reduced. In addition, the service life can be increased and the maintenance work can be reduced.

Ein zusätzlicher Vorteil besteht darin, dass, wenn Anschläge vorgesehen sind, um die Rückstellbewegung zurück in die Ausgangslage zu begrenzen, die Stoßbelastung auf den Maschinenrahmen, die Maschinenelemente und insbesondere die Lager reduziert werden kann.An additional advantage is that, when stops are provided to limit the return movement back to the starting position, the impact load on the machine frame, the machine elements and in particular the bearings can be reduced.

Der Gesamtschwerpunkt von Werkzeughalter und dem mindestens einen Stechwerkzeug kann auf der ersten Schwenkachse liegen.The overall focus of tool holder and the at least one piercing tool on the lie first pivot axis.

Bei einem weiteren Ausführungsbeispiel der Erfindung ist vorgesehen, dass eine Zusatzmasse mit dem Werkzeughalter gekoppelt ist, vorzugsweise mit diesem drehfest verbunden ist.In a further embodiment of the invention it is provided that an additional mass is coupled to the tool holder, preferably connected to this rotationally fixed.

Der Gesamtschwerpunkt von Zusatzmasse, Werkzeughalter und dem mindestens einen Stechwerkzeug ist in Relation zur ersten Schwenkachse derart angeordnet, dass das dem Rückstellmoment entgegenwirkende Trägheitsmoment von Werkzeughalter, Zusatzmasse und dem mindestens einen Stechwerkzeug kompensiert ist oder überkompensiert ist.The total center of gravity of additional mass, tool holder and the at least one piercing tool is arranged in relation to the first pivot axis such that the moment of inertia counteracting the restoring moment of the tool holder, additional mass and the at least one piercing tool is compensated or overcompensated.

Der Gesamtschwerpunkt von Zusatzmasse, Werkzeughalter und dem mindestens einen Stechwerkzeug kann in Relation zur ersten Schwenkachse derart angeordnet sein, dass das dem Rückstellmoment entgegenwirkende Trägheitsmoment von Werkzeughalter, Zusatzmasse und dem mindestens einen Stechwerkzeug derart überkompensiert ist, dass das um die erste Schwenkachse wirkende Trägheitsmoment zumindest einen Teil des Rückstellmoments bildet.The overall center of gravity of additional mass, tool holder and the at least one piercing tool can be arranged in relation to the first pivot axis such that the moment of inertia counteracting the restoring moment of tool holder, additional mass and the at least one piercing tool is overcompensated such that the moment of inertia acting around the first pivot axis at least one Part of the restoring moment forms.

Der Gesamtschwerpunkt von Zusatzmasse, Werkzeughalter und dem mindestens einen Stechwerkzeug kann auf der ersten Schwenkachse liegen.The overall center of gravity of additional mass, tool holder and the at least one piercing tool can lie on the first pivot axis.

Bei einem weiteren Ausführungsbeispiel ist vorgesehen, dass der Abstand, vorzugsweise der horizontale Abstand, des Gesamtschwerpunkts von Werkzeughalter und dem mindestens einen Stechwerkzeug oder der Abstand, vorzugsweise der horizontale Abstand, des Gesamtschwerpunkts von Zusatzmasse, Werkzeughalter und dem mindestens einen Stechwerkzeug von der ersten Schwenkachse einstellbar ist, vorzugsweise zentral für alle Werkzeughalter einstellbar ist.In a further embodiment, it is provided that the distance, preferably the horizontal distance, of the overall center of gravity of the tool holder and the at least one piercing tool or the distance, preferably the horizontal distance, of the total center of gravity of the additional mass, tool holder and the at least one piercing tool can be adjusted from the first pivot axis is, preferably centrally adjustable for all tool holder.

Dies hat den Vorteil, dass damit die Höhe des Trägheitsmoments von Werkzeughalter und dem mindestens einem Stechwerkzeug oder Zusatzmasse, Werkzeughalter und dem mindestens einem Stechwerkzeug einstellbar ist.This has the advantage that with it the height of the moment of inertia of tool holder and the at least one piercing tool or additional mass, tool holder and the at least one piercing tool is adjustable.

Das Führungselement kann ein Tragarm sein, der in einem zweiten Schwenklager an dem Maschinenrahmen schwenkbar gelagert ist.The guide element may be a support arm, which is pivotally mounted in a second pivot bearing on the machine frame.

Dieser Tragarm kann entgegen einer Federkraft längenveränderlich ausgebildet sein. Dies hat den Vorteil, dass damit zusätzlich die Gefahr der Schlitzbildung reduziert werden kann.This support arm may be formed variable in length against a spring force. This has the advantage that in addition the risk of slit formation can be reduced.

Mindestens eine schrauben- oder spiralförmige metallische Zug- oder Druckfeder kann die Federkraft erzeugen, die der Verlängerung des Tragarms entgegenwirkt. Die Feder besitzt vorzugsweise eine degressive Federkennlinie.At least one helical or spiral metallic tension or compression spring can generate the spring force counteracting the extension of the support arm. The spring preferably has a degressive spring characteristic.

Es kann mindestens ein Zug- bzw. Druckfederelement oder ein Federdämpferelement neben dem Tragarm, vorzugsweise parallel zu dem Tragarm, angeordnet sein. Das Federelement lässt ein Verschwenken des Werkzeughalters um die erste Schwenkachse zu und übt bei Wegfall des Bodeneingriffs zumindest einen Teil des Rückstellmoments auf den Werkzeughalter aus, so dass das Stechwerkzeug nach dem Herausziehen aus dem Boden wieder in die Ausgangslage zurückschwenkt.At least one tension or compression spring element or a spring damper element can be arranged next to the support arm, preferably parallel to the support arm. The spring element allows pivoting of the tool holder to the first pivot axis and exerts at omitting the ground engagement at least a portion of the restoring torque on the tool holder, so that the piercing tool pivots back after pulling out of the ground back to the starting position.

Bei einem weiteren Ausführungsbeispiel kann vorgesehen sein, dass das Zug- bzw. Druckfederelement oder das Federdämpferelement derart an dem Maschinenrahmen angeordnet ist, dass es ein hohes Rückstellmoment auf den Werkzeughalter ausübt, wenn sich das Stechwerkzeug außerhalb des Bodens befindet, und dass es ein geringes Rückstellmoment auf den Werkzeughalter ausübt, wenn sich das Stechwerkzeug im Boden befindet.In a further embodiment it can be provided that the tension or compression spring element or the spring damper element is arranged on the machine frame, that it exerts a high restoring torque on the tool holder when the piercing tool is located outside the ground, and that there is a small restoring moment on the tool holder when the piercing tool is in the ground.

Bei einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass zwischen Werkzeughalter und Führungselement ein Torsionselement angeordnet ist, das ein Verschwenken des Werkzeughalters relativ zu dem Führungselement zulässt und bei Wegfall der Krafteinwirkung zumindest einen Teil des Rückstellmoments auf den Werkzeughalter ausübt, so dass das Stechwerkzeug nach dem Herausziehen aus dem Boden wieder in die Ausgangslage zurückschwenkt.In a further embodiment of the invention, it is provided that a torsion element is arranged between the tool holder and guide element, which permits pivoting of the tool holder relative to the guide element and exerts at least a portion of the restoring torque on the tool holder when the action of force ceases, so that the piercing tool acts on the tool holder Pulling out of the ground swings back to the starting position.

Das Torsionselement kann aus mindestens einem Elastomerelement, einem Elastomerverbundelement oder aus einer schrauben- oder spiralförmigen metallischen Torsionsfeder bestehen.The torsion element may consist of at least one elastomer element, an elastomer composite element or a helical or spiral metallic torsion spring.

Bei einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass das Torsionselement mindestens zwei magnetische Elemente aufweist, wobei die mindestens zwei magnetischen Elemente so zueinander ausgerichtet sind, dass sie ein Verschwenken des Werkzeughalters um die erste Schwenkachse zulassen und bei Wegfall des Bodeneingriffs zumindest einen Teil des Rückstellmoments auf den Werkzeughalter ausüben, so dass das Stechwerkzeug nach dem Herausziehen aus dem Boden wieder in die Ausgangslage zurückschwenkt.In a further embodiment of the invention, it is provided that the torsion element has at least two magnetic elements, wherein the at least two magnetic elements are aligned with each other so that they allow pivoting of the tool holder about the first pivot axis and at least a portion of the restoring torque when the ground engagement Exercise on the tool holder, so that the piercing tool pivots back after swinging out of the ground back to the starting position.

Die magnetischen Elemente können aus Dauer- oder aus Elektromagneten bestehen, wobei die Elektromagneten in Abhängigkeit der Bewegungsphase aktivierbar oder deaktivierbar sind.The magnetic elements can consist of permanent magnets or of electromagnets, the electromagnets being activatable or deactivatable as a function of the movement phase.

Im Folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert.In the following, embodiments of the invention will be explained in more detail with reference to the drawings.

Es zeigen schematisch:

Fig. 1
eine Seitenansicht auf eine Bodenbearbeitungsmaschine,
Fig. 2
eine Seitenansicht eines erfindungsgemäßen Ausführungsbeispiels mit Stechwerkzeug,
Fig. 3
Beschleunigungs- und Geschwindigkeitsverläufe von zwei Punkten des Tragarms,
Fig. 4
eine Seitenansicht auf ein erfindungsgemäßes Ausführungsbeispiel mit zentraler Positionseinrichtung,
Fig. 5
eine Seitenansicht eines weiteren Ausführungsbeispiels, bei dem eine spiral- bzw. schraubenförmige Torsionsfeder verwendet ist,
Fig. 6
eine Seitenansicht auf ein weiteres Ausführungsbeispiel, bei dem ein Elastomer-Metall-Verbundelement verwendet ist,
Fig. 7
eine Seitenansicht auf ein weiteres erfindungsgemäßes Ausführungsbeispiel, bei dem das Torsionselement drei Magnete aufweist,
Fig. 8
eine Seitenansicht eines weiteren Ausführungsbeispiels mit Federdämpferelement,
Fig. 9
ein weiteres Ausführungsbeispiel mit längenveränderlichem Tragarm.
They show schematically:
Fig. 1
a side view of a tillage machine,
Fig. 2
a side view of an embodiment of the invention with piercing tool,
Fig. 3
Acceleration and speed curves of two points of the support arm,
Fig. 4
a side view of an inventive embodiment with central position means,
Fig. 5
a side view of another embodiment, in which a helical torsion spring is used,
Fig. 6
a side view of a further embodiment, in which an elastomer-metal composite element is used,
Fig. 7
a side view of a further embodiment according to the invention, in which the torsion element comprises three magnets,
Fig. 8
a side view of another embodiment with spring damper element,
Fig. 9
a further embodiment with variable-length support arm.

Fig. 1 zeigt eine Seitenansicht einer fahrbaren Bodenbearbeitungsvorrichtung, die selbstfahrend ist oder mit Hilfe einer Zugmaschine gezogen werden kann. Diese Bodenbearbeitungsvorrichtung 6 weist einen Maschinenrahmen 38 auf, an dem über Führungselemente 30 mehrere durch einen Antrieb 36 auf und ab bewegbare Stechwerkzeuge 1 schwenkbar gelagert sind. Die Stechwerkzeuge 1 werden aufgrund der Auf- und Abbewegung abwechselnd in den Boden 8 eingedrückt und führen in dem Boden 8 aufgrund der Vorwärtsbewegung der Bodenbearbeitungsvorrichtung 6 eine Kippbewegung aus. Dadurch wird der Boden 8 unterhalb des Einstechlochs aufgebrochen, wodurch beispielsweise die Drainage des Bodens 8 verbessert wird. Dabei soll das Einstechloch in der Bodenoberfläche trotz der Fahrgeschwindigkeit der Bodenbearbeitungsvorrichtung 6 möglichst klein bleiben. Fig. 1 shows a side view of a mobile tillage device that is self-propelled or can be pulled by means of a tractor. This tillage device 6 has a machine frame 38, on which a plurality of guide elements 30 by a drive 36 movable up and down lancing tools 1 are pivotally mounted. The piercing tools 1 are pressed alternately into the ground 8 due to the up and down movement and perform in the bottom 8 due to the forward movement of the soil cultivation device 6 from a tilting movement. Thereby, the bottom 8 is broken below the piercing hole, whereby, for example, the drainage of the bottom 8 is improved. In this case, the puncture hole in the ground surface should remain as small as possible despite the driving speed of the tillage device 6.

Das mindestens eine Stechwerkzeuge 1 wird vorzugsweise mit Hilfe einer Haltevorrichtung 4 in einem Werkzeughalter 2 befestigt. Stechwerkzeuge 1 unterschiedlicher Länge und Form sowie Durchmesser können an dem Werkzeughalter 2 befestigt werden, der von einem Führungselement 30 geführt wird. Das Führungselement 30 führt vorzugsweise durch einen Kurbeltrieb 36 angetrieben eine Auf- und Abbewegung aus. Alternativ ist es auch möglich, das Führungselement 30 hydraulisch oder elektrisch anzutreiben.The at least one piercing tool 1 is preferably fastened by means of a holding device 4 in a tool holder 2. Puncture tools 1 of different length and shape and diameter can be attached to the tool holder 2, which is guided by a guide member 30. The guide element 30 preferably carries driven by a crank drive 36 an up and down movement. Alternatively, it is also possible to drive the guide element 30 hydraulically or electrically.

An dem Führungselement 30 ist der Werkzeughalter 2 um eine erste Schwenkachse 12 schwenkbar gelagert, wobei der Werkzeughalter 2 ein Stechwerkzeug 1 oder eine Gruppe von Stechwerkzeugen 1 aufnimmt, die aufgrund der Auf- und Abbewegung in den Boden 8 einstechbar und wieder herausziehbar sind. Es können mehrere, vorzugsweise nebeneinander angeordnete Stehwerkzeuge 1 oder nebeneinander angeordnete Gruppen von Stechwerkzeugen 1 angetrieben werden. Die Stechwerkzeuge 1, bzw. Gruppen von Stechwerkzeugen 1 werden bevorzugt phasenverschoben angetrieben.On the guide member 30 of the tool holder 2 is pivotally mounted about a first pivot axis 12, wherein the tool holder 2 receives a piercing tool 1 or a group of piercing tools 1, which are pierceable and retractable due to the up and down movement in the bottom 8. It can be several, preferably juxtaposed standing tools 1 or juxtaposed groups of piercing tools 1 are driven. The piercing tools 1, or groups of piercing tools 1 are preferably driven out of phase.

Fig. 2 zeigt eine Seitenansicht auf ein erfindungsgemäßes Ausführungsbeispiel. Ein Kurbeltrieb 36 treibt über eine Schubstange 34 das Führungselement 30 an, das die Form eines Tragarms aufweist. Die Schubstange 34 ist in einem ersten Schwenklager 10 an einen Führungselement 30 gelagert. Das Führungselement 30 ist in einem zweiten Schwenklager 26 am Maschinenrahmen 38 schwenkbar gelagert. An dem Führungselement 30 ist ein Werkzeughalter 2 um eine erste Schwenkachse 12 schwenkbar gelagert. Der Werkzeughalter 2 weist zwei Werk entgegengesetzt voneinander abstehende Arme 2a, 2b auf. Der Arm 2a des Werkzeughalters 2 weist eine Befestigungseinrichtung 4 auf, mit der mindestens ein Stechwerkzeug 1 mit dem Werkzeughalter 2 drehfest verbunden werden kann. Fig. 2 shows a side view of an inventive embodiment. A crank mechanism 36 drives via a push rod 34, the guide member 30, which has the shape of a support arm. The push rod 34 is mounted in a first pivot bearing 10 to a guide member 30. The guide member 30 is pivotally mounted in a second pivot bearing 26 on the machine frame 38. On the guide member 30, a tool holder 2 is pivotally mounted about a first pivot axis 12. The tool holder 2 has two work oppositely projecting arms 2a, 2b. The arm 2a of the tool holder 2 has a fastening device 4, with which at least one piercing tool 1 can be rotatably connected to the tool holder 2.

Parallel zu dem Führungselement 30 ist ein Koppelarm 24 angebracht, der an seinem einen Ende in einer Verstelleinrichtung 40 gelagert ist. Die Verstelleinrichtung 40 ist mit dem Maschinenrahmen 38 drehfest verbunden. An dem von der Verstelleinrichtung 40 abgewandten Ende ist ein Anschlag 22 mit dem Koppelarm 24 schwenkbar verbunden. Der Anschlag 22 seinerseits ist an dem Führungselement 30 schwenkbar angelenkt. Die Lage des Anschlags 22 kann mit Hilfe der Verstelleinrichtung 40 verstellt werden. Mit der Lage des Anschlags 22 wird die Ausgangslage des mindestens einen Stechwerkzeugs 1 eingestellt, da das mindestens eine Stechwerkzeug 1 und/oder der Werkzeughalter 2 zumindest vor dem Einstechen an dem Anschlag 22 anliegen. Vorzugsweise kann mit der Verstelleinrichtung 40 die Ausgangslage für alle nebeneinander angeordneten Stechwerkzeuge bzw. Gruppen von Stechwerkzeugen zentral verstellt werden. Die Verstelleinrichtung 40 kann elektrisch, hydraulisch oder pneumatisch betrieben werden. Bei eingestochenem Stechwerkzeug 1 und Weiterbewegung der Bodenbearbeitungsvorrichtung 6 in Fahrtrichtung A wird das mindestens eine Stechwerkzeug 1 um die erste Schwenkachse 12 verschwenkt.Parallel to the guide member 30, a coupling arm 24 is mounted, which is mounted at its one end in an adjusting device 40. The adjusting device 40 is rotatably connected to the machine frame 38. At the end facing away from the adjusting device 40, a stop 22 is pivotally connected to the coupling arm 24. The stopper 22 in turn is hinged to the guide member 30 pivotally. The position of the stop 22 can be adjusted by means of the adjusting device 40. With the position of the stop 22, the starting position of the at least one piercing tool 1 is set, since the at least one piercing tool 1 and / or the tool holder 2 abut against the stop 22 at least before piercing. Preferably, with the adjusting device 40, the starting position for all juxtaposed lancing tools or groups of puncturing tools can be adjusted centrally. The adjusting device 40 can be operated electrically, hydraulically or pneumatically. When punctured piercing tool 1 and further movement of the tillage device 6 in the direction of travel A, the at least one piercing tool 1 is pivoted about the first pivot axis 12.

Das Führungselement 30 führt, angetrieben durch die Schubstange 34 des Kurbeltriebs 36, insbesondere in den Punkten B und C eine Auf- und Abbewegung aus. Die Geschwindigkeiten vB und vC, mit denen sich die Punkte B und C des Führungselements 30 auf- und abbewegen, sind für eine konstante Winkelgeschwindigkeit des Kurbeltriebs 36 in Fig. 3 vereinfacht dargestellt.The guide member 30, driven by the push rod 34 of the crank mechanism 36, in particular in the points B and C an up and down movement. The speeds v B and v C , with which move the points B and C of the guide member 30 up and down, are for a constant angular velocity of the crank mechanism 36 in Fig. 3 shown in simplified form.

Auf der x-Achse ist die Winkellage des Kurbelzapfens 16 angegeben. Die Punkte B und C des Führungselements 30 erreichen den unteren Totpunkt UT, wenn der Kurbelzapfen 180° bereits überschritten hat. Dies ist der Fall, weil einerseits die Drehachse des Kurbeltriebs 36 und das erste Schwenklager 10 horizontal versetzt zueinander angeordnet sind und andererseits die Punkte B und C des Führungselements 30, aufgrund der Schwenkbewegung des Führungselements 30 um das zweite Schwenklager 26, keine exakte vertikale Bewegung ausführen.The angular position of the crank pin 16 is indicated on the x-axis. The points B and C of the guide member 30 reach the bottom dead center UT when the crank pin has already exceeded 180 °. This is the case because on the one hand the axis of rotation of the crank mechanism 36 and the first pivot bearing 10 are arranged horizontally offset from each other and on the other hand, the points B and C of the guide member 30, due to the pivotal movement of the guide member 30 about the second pivot bearing 26, perform no exact vertical movement ,

In Fig. 3 sind ebenfalls die Beschleunigungsverläufe aB, aC der Punkte B und C des Führungselements 30 dargestellt. Im oberen OT und unteren UT Totpunkt der Auf- und Abbewegung, wo die Geschwindigkeiten vV, vC gleich null sind, erreichen die Beschleunigungen aB, aC ihren Maximalwert. Die Maximalwerte der Beschleunigungen aB, aC übersteigen die Erdbeschleunigung um ein Vielfaches. Die Stechwerkzeuge 1 befinden sich in dem mit F markierten Bereich außerhalb des Bodens. In diesem Bereich wirkt eine sehr hohe Beschleunigung in vertikaler Richtung nach oben auf die bei der Auf- und Abbewegung mitbewegten Massen, das heißt auch auf den Werkzeughalter 2 und das mindestens eine Stechwerkzeug 1. Wenn nun der Arm 2b des Werkzeughalters 2 aus Fig. 2 ein entsprechendes Gewicht aufweist und derart in Bezug auf die erste Schwenkachse 12 angeordnet ist, dass der Gesamtschwerpunkt 32 von Werkzeughalter 2 und Stechwerkzeug 1 in Bezug auf die erste Schwenkachse 12 in horizontaler Richtung auf der gegenüberliegenden Seite des mindestens einen Stechwerkzeugs 1 liegt, dann wird ein Rückstellmoment auf den Werkzeughalter 2 und damit die Stechwerkzeuge 1 ausgeübt, sodass die Stechwerkzeuge 1 wieder in die Ausgangslage zurückgeschwenkt werden.In Fig. 3 are also the acceleration curves a B , a C of the points B and C of the Guiding element 30 shown. In the top OT and bottom dead center of the up and down movement, where the velocities v V , v C are equal to zero, the accelerations a B , a C reach their maximum value. The maximum values of the accelerations a B , a C exceed the gravitational acceleration by a multiple. The piercing tools 1 are located in the marked F area outside the soil. In this area, a very high acceleration in a vertical upward direction acts on the moving along in the up and down movement masses, that is also on the tool holder 2 and the at least one piercing tool 1. If now the arm 2b of the tool holder 2 off Fig. 2 has a corresponding weight and is arranged with respect to the first pivot axis 12, that the total center of gravity 32 of tool holder 2 and piercing tool 1 with respect to the first pivot axis 12 in the horizontal direction on the opposite side of the at least one piercing tool 1, then a Return torque to the tool holder 2 and thus the piercing tools 1 exercised, so that the piercing tools 1 are pivoted back into the starting position.

Das Ausführungsbeispiel der Fig. 2 kann alternativ so ausgeführt werden, dass nicht der Werkzeughalter 2 zwei Arme aufweist, sondern das mindestens eine Stechwerkzeug 1. Der Gesamtschwerpunkt von Werkzeughalter 2 und dem mindestens einen Stechwerkzeug 1 mit den zwei Armen ist dann ebenfalls derart angeordnet, dass das um die erste Schwenkachse 12 wirkende Trägheitsmoment von Werkzeughalter 2 und Stechwerkzeug 1 zumindest einen Teil des Rückstellmoments bildet.The embodiment of Fig. 2 can alternatively be carried out so that not the tool holder 2 has two arms, but the at least one piercing tool 1. The total center of gravity of the tool holder 2 and the at least one piercing tool 1 with the two arms is then also arranged such that the about the first pivot axis 12th acting moment of inertia of tool holder 2 and piercing tool 1 forms at least a portion of the restoring moment.

Es kann auch eine Zusatzmasse 44 drehfest mit dem Werkzeughalter 2 und/oder Stechwerkzeug 1 verbunden sein, sodass der Gesamtschwerpunkt von Stechwerkzeug 1, Zusatzmasse 44 und Werkzeughalter 2 so angeordnet ist, dass das um die erste Schwenkachse 12 wirkende Trägheitsmoment von Werkzeughalter 2, Stechwerkzeug 1 und Zusatzmasse 44 zumindest einen Teil des Rückstellmoments bildet.It may also be an additional mass 44 rotatably connected to the tool holder 2 and / or piercing tool 1, so that the total center of gravity of piercing tool 1, additional mass 44 and tool holder 2 is arranged so that the force acting around the first pivot axis 12 moment of inertia of tool holder 2, piercing tool. 1 and additional mass 44 forms at least part of the restoring moment.

Fig. 4 zeigt ein ähnliches Ausführungsbeispiel wie Fig. 2, mit dem Unterschied, dass anstelle des Koppelarms 24 mit Anschlag 22 eine Federdämpferelement 42 parallel zu dem Führungselement angeordnet ist. Die Federdämpferelement 42 ist auf der einen Seite an dem Maschinenrahmen 38 und auf der gegenüberliegenden Seite am Werkzeughalter 2 schwenkbar gelagert. Das Federdämpferelement 42 lässt ein Verschwenken des Werkzeughalters 2 um die erste Schwenkachse 12 zu und übt bei Wegfall des Bodeneingriffs zumindest einen Teil des Rückstellmoments auf den Werkzeughalter 2 aus, sodass das Stechwerkzeug 1 nach dem Herausziehen aus dem Boden 8 wieder in die Ausgangslage zurückschwenkt. Der Arm 2b des Werkzeughalters 2 weist eine Positionsverstelleinrichtung 46 und eine Zusatzmasse 44 auf. Der Abstand der Zusatzmasse 44 von der ersten Schwenkachse 12 kann mit Hilfe der Positionsverstelleinrichtung 46 vorzugsweise zentral verstellt werden. Die Positionsverstelleinrichtung 46 weist einen Sensor auf, der die Position der Zusatzmasse 44 bestimmen kann. Die Lage der Zusatzmasse 44 kann so verstellt werden, dass der Gesamtschwerpunkt von Werkzeughalter 2, Stechwerkzeug 1 und Zusatzmasse 44 in Relation zur ersten Schwenkachse 12 derart angeordnet ist, dass das dem Rückstellmoment entgegenwirkende Trägheitsmoment von Werkzeughalter 2, Zusatzmasse 44 und dem mindestens einen Stechwerkzeug 1 kompensiert ist oder derart überkompensiert ist, dass das um die erste Schwenkachse wirkende Trägheitsmoment zumindest einen Teil des Rückstellmoments bildet. Fig. 4 shows a similar embodiment as Fig. 2 , with the difference that instead of the coupling arm 24 with stop 22, a spring damper element 42 is arranged parallel to the guide element. The spring damper element 42 is pivotally mounted on one side on the machine frame 38 and on the opposite side of the tool holder 2. The spring damper element 42 permits a pivoting of the tool holder 2 about the first pivot axis 12 and exerts at least a portion of the restoring torque on the tool holder 2 when the ground engagement is removed, so that the piercing tool 1 pivots back out of the bottom 8 into the starting position after being pulled out. The arm 2b of the tool holder 2 has a position adjustment device 46 and an additional mass 44. The distance of the additional mass 44 from the first pivot axis 12 can preferably be adjusted centrally by means of the position adjustment device 46. The position adjustment device 46 has a sensor that can determine the position of the additional mass 44. The position of the additional mass 44 can be adjusted so that the total center of gravity of the tool holder 2, piercing tool 1 and additional mass 44 is arranged in relation to the first pivot axis 12 such that the moment of inertia counteracting the restoring moment of tool holder 2, additional mass 44 and the at least one piercing tool. 1 is compensated or is overcompensated such that the moment of inertia acting around the first pivot axis forms at least a part of the restoring moment.

In Fig. 5 ist ein Ausführungsbeispiel dargestellt, das dem aus Fig. 2 ähnlich ist, mit dem Unterschied, dass anstatt des Federdämpferelements 42 ein Torsionselement 48, 50, 64 verwendet wird. Das koaxial zur ersten Schwenkachse 12 wirkende Torsionselement 48, 50, 64 ist zwischen Werkzeughalter 2 und dem Führungselement 30 angebracht.In Fig. 5 an embodiment is shown that from the Fig. 2 is similar, with the difference that instead of the spring damper element 42, a torsion element 48, 50, 64 is used. The coaxial with the first pivot axis 12 acting torsion 48, 50, 64 is mounted between the tool holder 2 and the guide member 30.

Vor dem Einstechen ist das Torsionselement 48, 50, 64 unbelastet, wobei in der Ausgangslage kurz vor dem Einstechen ein vorbestimmter Einstechwinkel des Stechwerkzeugs 1 eingestellt ist. Das Torsionselement 48, 50, 64 lässt unter Krafteinwirkung auf das Stechwerkzeug 1, das heißt, bei eingestochenem Stechwerkzeug 1 und Weiterbewegung der Bodenbearbeitungsvorrichtung 6 in Fahrtrichtung A, ein Verschwenken des Stechwerkzeugs 1 entgegen der Fahrtrichtung zu. Bei Wegfall der Krafteinwirkung, das heißt, nach dem Herausziehen des Stechwerkzeugs 1 aus dem Boden 8, übt das Torsionselement 48, 50, 64 zumindest einen Teil des Rückstellmomentes auf den Werkzeughalter 2 aus, sodass das Stechwerkzeug 1 nach dem Herausziehen wieder in die Ausgangslage zurückschwenkt.Before piercing, the torsion element 48, 50, 64 is unloaded, wherein in the starting position shortly before piercing a predetermined piercing angle of the piercing tool 1 is set. The torsion element 48, 50, 64 allows under the action of force on the piercing tool 1, that is, when piercing the piercing tool 1 and further movement of the tillage device 6 in the direction of travel A, a pivoting of the piercing tool 1 against the direction of travel. In the absence of the force, that is, after pulling out of the piercing tool 1 from the bottom 8, the torsion element 48, 50, 64 exerts at least a portion of the restoring torque on the tool holder 2, so that the piercing tool 1 pivots back to the starting position after pulling out ,

In Fig. 5 ist das Torsionselement 48, 50, 64 ein koaxial zur ersten Schwenkachse 12 verlaufende spiral- bzw. schraubenförmige Metalltorsionsfeder 48. Die eine Seite der Metallfeder ist mit dem Führungselement 30 und die andere Seite ist mit dem Werkzeughalter 2 drehfest verbunden. Es ist hier auch möglich ein koaxiales achsen- oder hülsenförmiges Stützelement zur Verstärkung zu verwenden. Dieses Stützelement kann dann ebenfalls am Werkzeughalter 2 und am Führungselement 30 drehbar gelagert sein.In Fig. 5 the torsion element 48, 50, 64 is a co-axial to the first pivot axis 12 extending helical or helical metal torsion spring 48. The one side of the metal spring is connected to the guide member 30 and the other side is rotatably connected to the tool holder 2. It is also possible here to use a coaxial axle or sleeve-shaped support element for reinforcement. This support element can then likewise be rotatably mounted on the tool holder 2 and on the guide element 30.

Fig. 6 zeigt ein abgewandeltes Ausführungsbeispiel der Fig. 5, bei dem zusätzlich ein Kopplungsarm 24 an dem Werkzeughalter 2 zum zentralen Verstellen des Einstechwinkels schwenkbar gelagert ist. Der Kopplungsarm 24 ist vor dem Einstechen in den Boden 8 mit dem Anschlag 22 in direktem Kontakt. An dem von dem Werkzeughalter 2 entfernten Ende ist der Kopplungsarm 24 schwenkbar an dem Zwischenelement 54 gelagert, das seinerseits schwenkbar an dem Maschinenrahmen 38 gelagert ist. Der Anschlag 22 kann mit einer Verstelleinrichtung 40, in diesem Fall mit einer exzentrischen Stange, zentral für alle Stechwerkzeuge 1 bzw. Gruppen von Stechwerkzeugen 1 verstellt werden. Der Anschlag 22 begrenzt die Rückstellbewegung der Stechwerkzeuge 1 zurück in die Ausgangslage. Somit kann der Einstechwinkel der Stechwerkzeuge 1 zentral verstellt werden. Alternativ kann der Einstechwinkel auch einzeln verstellt den. Alternativ kann der Einstechwinkel auch einzeln verstellt werden, indem der Anschlag 22 direkt an dem Führungselement 30 oder dem Werkzeughalter 2 befestigt wird. Fig. 6 shows a modified embodiment of the Fig. 5 in which additionally a coupling arm 24 is pivotally mounted on the tool holder 2 for centrally adjusting the insertion angle. The coupling arm 24 is in direct contact with the stop 22 prior to piercing the bottom 8. At the end remote from the tool holder 2, the coupling arm 24 is pivotally mounted on the intermediate element 54, which in turn is pivotally mounted on the machine frame 38. The stop 22 can be adjusted centrally with an adjusting device 40, in this case with an eccentric rod, for all piercing tools 1 or groups of piercing tools 1. The stop 22 limits the return movement of the piercing tools 1 back to the starting position. Thus, the piercing angle of the piercing tools 1 can be adjusted centrally. Alternatively, the piercing angle can also be adjusted individually. Alternatively, the piercing angle can also be adjusted individually by the stop 22 is attached directly to the guide member 30 or the tool holder 2.

In Fig. 6 besteht das Torsionselement 48, 50, 64 aus einem Metall-ElastomerVerbundelement 50, wie es beispielsweise von der Firma Rosta erhältlich ist. Das Elastomer-Metall-Verbundelement 50 weist ein Gehäuse 55 auf, das vorzugsweise aus einem viereckigen, bzw. dreieckigen Hohlprofil besteht. Weiter weist das Elastomer-Metall-Verbundelement eine zentrale Stange 56 auf, die sich im Inneren des Gehäuses 55 befindet und ebenfalls vorzugsweise einen viereckigen, bzw. dreieckigen Querschnitt besitzt. Alternativ kann sowohl bei dem Gehäuse 55 als auch bei der Stange 56 ein allgemein polygoner Querschnitt verwendet werden.In Fig. 6 the torsion element 48, 50, 64 consists of a metal-elastomer composite element 50, as it is available, for example, from Rosta. The elastomer-metal composite element 50 has a housing 55, which preferably consists of a quadrangular or triangular hollow profile. Furthermore, the elastomer-metal composite element has a central rod 56, which is located in the interior of the housing 55 and also preferably has a quadrangular or triangular cross-section. Alternatively, a generally polygonal cross-section may be used in both the housing 55 and the rod 56.

Die Stange ist, beispielsweise bei im Wesentlichen quadratischen Profilen des Gehäuses 55 und der Stange 56, gegenüber dem Gehäuse 55 um einen Drehwinkel von 45° versetzt angeordnet. Zwischen dem Gehäuse 55 und der Stange 56 sind Elastomerelemente 58 in den Ecken des Gehäuses 55 angeordnet und erstrecken sich im Wesentlichen über die gesamte Länge des Gehäuses 55 und der Stange 56. Unter Einwirkung eines Drehmoments kann die Stange 56 gegenüber dem Gehäuse 55 verdreht werden. Dabei werden die Elastomerelemente 58 komprimiert und es entsteht ein elastisches Rückstellmoment, das zumindest einen Teil des gesamten Rückstellmoments bildet. Bei einer im Querschnitt dreieckigen Form des Gehäuses 55 und der Stange 56 kann ein größerer Torsionswinkel genutzt werden.The rod is, for example, arranged at substantially square profiles of the housing 55 and the rod 56, relative to the housing 55 by a rotation angle of 45 °. Between the housing 55 and the rod 56 elastomeric elements 58 are arranged in the corners of the housing 55 and extend substantially over the entire length of the housing 55 and the rod 56. Under the influence of a torque, the rod 56 can be rotated relative to the housing 55. In this case, the elastomer elements 58 are compressed and there is an elastic restoring moment, which forms at least part of the total restoring torque. In a triangular in cross-sectional shape of the housing 55 and the rod 56, a larger torsion angle can be used.

Fig. 7 zeigt ein weiteres Ausführungsbeispiel mit einem Torsionselement 48, 50, 64. Das Torsionselement 48, 50, 64 weist in dem Fall drei magnetische Elemente auf. Das erste magnetische Element 60 befindet sich innerhalb eines achsenförmigen Halteelements 63 und ist mit diesem drehfest verbunden. Das Halteelement 63 ist mit dem Führungselement 30 drehfest verbunden. Das Halteelement 63 weist einen runden Querschnitt auf. Das Halteelement 63 wird von mindestens einem weiteren beweglichen Zwischenelement 65 umschlossen, das mit dem Werkzeughalter 2 drehfest verbunden ist. Der Werkzeughalter 2 kann um die erste Schwenkachse 12 relativ zu dem als Schwenklager dienenden Halteelement 63 verschwenkt werden. Innerhalb des Zwischenelements 65 sind gegenüberliegend zwei weitere magnetische Elemente 61, 62 angeordnet. Fig. 7 shows a further embodiment with a torsion element 48, 50, 64. The torsion element 48, 50, 64 has in this case three magnetic elements. The first magnetic element 60 is located within an axis-shaped holding element 63 and is rotatably connected thereto. The holding member 63 is rotatably connected to the guide member 30. The holding element 63 has a round cross section. The holding element 63 is enclosed by at least one further movable intermediate element 65, which is connected in a rotationally fixed manner to the tool holder 2. The tool holder 2 can be pivoted about the first pivot axis 12 relative to the support member 63 serving as a pivot bearing. Within the intermediate element 65, two further magnetic elements 61, 62 are arranged opposite one another.

Solange sich das Stechwerkzeug 1 in der Ausgangs- und Ruhelage befindet, ist der Nordpol des zweiten magnetischen Elements 62 auf der Seite des Südpols des ersten magnetischen Elements 60 und der Südpol des dritten magnetischen Elements 61 auf der Seite des Nordpols des ersten magnetischen Elements 60 angeordnet.As long as the piercing tool 1 is in the home and rest positions, the north pole of the second magnetic element 62 on the south pole side of the first magnetic element 60 and the south pole of the third magnetic element 61 on the north pole side of the first magnetic element 60 are arranged ,

Bei eingestochenem Stechwerkzeug 1 und Weiterbewegung der Bodenbearbeitungsvorrichtung 6 wird der Werkzeughalter 2 entgegen eines magnetischen Momentes um die erste Schwenkachse 12 relativ zu dem Halteelement 63 verschwenkt. Sobald sich das Stechwerkzeug 1 außerhalb des Bodes befindet, bewegt das magnetische Rückstellmoment der magnetischen Elemente 60, 61, 62, das zumindest einen Teil des gesamten Rückstellmomentes darstellt, das Stechwerkzeug 1 wieder in die Ausgangslage zurück.When punctured piercing tool 1 and further movement of the soil cultivation device 6, the tool holder 2 is pivoted against the magnetic element about the first pivot axis 12 relative to the holding member 63. As soon as the piercing tool 1 is outside the bottom, the magnetic restoring moment of the magnetic elements 60, 61, 62, which represents at least a part of the total restoring moment, moves the piercing tool 1 back into its starting position.

Die magnetischen Elemente 60, 61, 62 können aus Dauer- oder aus Elektromagneten bestehen. Im Falle eines Elektromagneten besteht die Möglichkeit, den Strom nur in bestimmten Bewegungsphasen einzuschalten, z.B. in denen sich das Stechwerkzeug 1 nicht in Kontakt mit dem Boden 8 befindet.The magnetic elements 60, 61, 62 may consist of permanent or electromagnets. In the case of an electromagnet, it is possible to turn on the current only in certain phases of movement, e.g. in which the piercing tool 1 is not in contact with the ground 8.

Das Halteelement 63, das Zwischenelement 65, das Führungselement 30 und der Werkzeughalter 2 bestehen vorzugsweise aus nicht- bzw. schlecht magnetisierbarem Material, wie z.B. nicht magnetisierbarer Stahl (U-Boot-Stahl), hochfeste Metalle, Kunststoff, vorzugsweise Duroplast oder aus keramischem Material.The holding element 63, the intermediate element 65, the guide element 30 and the tool holder 2 are preferably made of non-poorly or poorly magnetizable material, such. non-magnetizable steel (submarine steel), high-strength metals, plastic, preferably duroplastic or ceramic material.

In Fig. 7 ist der Gesamtschwerpunkt von Werkzeughalter 2, Zwischenelement 65, zweiten 62 und dritten 61 magnetischen Element und dem mindestens einen Stechwerkzeug 1 in Relation zur ersten Schwenkachse 12 derart angeordnet, dass das dem Rückstellmoment entgegenwirkende Trägheitsmoment von Werkzeughalter 2, Zwischenelement 65, zweitem 62 und drittem 61 magnetischen Element und dem mindestens einen Stechwerkzeug 1 kompensiert ist oder derart überkompensiert ist, dass das um die erste Schwenkachse 12 wirkende Trägheitsmoment zumindest einen Teil des Rückstellmoments bildet.In Fig. 7 the total center of gravity of the tool holder 2, intermediate element 65, second 62 and third 61 magnetic element and the at least one piercing tool 1 is arranged in relation to the first pivot axis 12 such that the moment of inertia counteracting the restoring moment of tool holder 2, intermediate element 65, second 62 and third 61st magnetic element and the at least one piercing tool 1 is compensated or is overcompensated such that the moment of inertia acting around the first pivot axis 12 forms at least part of the restoring torque.

Fig. 8 zeigt ein weiteres Ausführungsbeispiel bei dem ein Dämpferelement 68 dem Führungselement 30 parallel angeordnet ist. Das Dämpferelement 68 ist auf der einen Seite am Werkzeughalter 2 und auf der gegenüberliegenden Seite am Maschinenrahmen 38 schwenkbar gelagert. Eine Feder 70 ist ebenfalls an dem Werkzeughalter 2 und auf der gegenüberliegenden Seite am Maschinenrahmen 38 schwenkbar gelagert. Die Feder 70 ist jedoch nicht parallel zum Führungselement 30 angeordnet. Die Feder 70 ist so angeordnet, dass die Feder 70 die größte Federlänge aufweist, wenn sich das mindestens eine Stechwerkzeug 1 außerhalb des Bodens 8 befindet, und die geringste Federlänge aufweist, wenn sich das Stechwerkzeug 1 innerhalb des Bodens 8 befindet. Dies hat zur Folge, dass die Feder 70 ein hohes Rückstellmoment auf das mindestens eine Stechwerkzeug 1 ausübt, wenn sich das Stechwerkzeug 1 außerhalb des Bodes 8 befindet, und dass die Feder 70 ein geringes Rückstellmoment auf das mindestens eine Stechwerkzeug 1 ausübt, wenn sich das Stechwerkzeug 1 im Boden 8 befindet. Fig. 8 shows a further embodiment in which a damper element 68 is arranged parallel to the guide member 30. The damper element 68 is pivotally mounted on the one hand on the tool holder 2 and on the opposite side of the machine frame 38. A spring 70 is also pivotally mounted on the tool holder 2 and on the opposite side of the machine frame 38. However, the spring 70 is not arranged parallel to the guide element 30. The spring 70 is arranged so that the spring 70 has the largest spring length when the at least one piercing tool 1 is located outside the bottom 8, and has the smallest spring length when the piercing tool 1 is located within the bottom 8. This has the consequence that the spring 70 exerts a high restoring torque on the at least one piercing tool 1 when the piercing tool 1 is located outside the bottom 8, and that the spring 70 exerts a low restoring moment on the at least one piercing tool 1 when the Punching tool 1 in the bottom 8 is located.

Fig. 9 zeigt ein weiteres Ausführungsbeispiel mit einem zweigeteilten verlängerbaren Führungselement 30. Zwischen den beiden Teilen 30a und 30b des Führungselements 30 ist ein Federelement 76 in Form einer schrauben- bzw. spiralförmigen Druckfeder angeordnet. An dem ersten Teil 30a des Führungselements 30 ist der Werkzeughalter 2 schwenkbar gelagert. Der zweite Teil 30b des Führungselements 30 ist an den Maschinenrahmen 38 schwenkbar gelagert. Die Schubstange 34 des Kurbeltriebs 36 treibt das Führungselement 30 über den zweiten Teil 30b des Führungselements 30 an. Das Federelement 76 sitzt auf einer mit dem ersten Teil 30a des Führungselements 30 verbundenen Kolbenstange 78. Die beiden Teile 30a, 30b des Führungselements 30 sind teleskopartig ausgeführt. Es ist ein Kolben- und Einstellelement 82 vorgesehen, dass das Federelement 76 variabel einstellbar vorspannt und den ersten Teil 30a des Führungselements 30 innerhalb einer Bohrung 86 des zweiten Teils 30b des Führungselements 30 führt. Das hülsenförmige Kolben- und Einstellelement 82 weist eine glatte Manteloberfläche auf, sodass es als Kolbenelement in der Bohrung 86 des zweiten Teils 30b des Führungselements 30 dienen kann. Das Kolben- und Einstellelement 82 und/oder die Kolbenstange 78 sind mit dem zweiten Teil 30b des Führungselements 30 vor dem Einstechen des mindestens einen Stechwerkzeugs 1 in direktem Kontakt, sodass kurz vor und während dem Einstechen des Stechwerkzeugs 1 in den Boden 8 eine direkte Kraftübertragung ohne Federelement 76 von dem zweiten Teil 30b des Führungselements 30 auf den ersten Teil 30a des Führungselements 30 und umgekehrt stattfinden kann. Bei eingestochenem Stechwerkzeug 1 und Weiterbewegung der Bodenbearbeitungsvorrichtung 6 in Fahrtrichtung A wird das mindestens eine Stechwerkzeug 1 verschwenkt. Dieses Ausführungsbeispiel reduziert die Gefahr, dass die Stechwerkzeuge 1 bei zu schneller Weiterbewegung der Bodenbearbeitungsvorrichtung in Fahrtrichtung A Schlitze in die Bodenoberfläche ziehen. Fig. 9 shows a further embodiment with a two-part extendable guide element 30. Between the two parts 30a and 30b of the guide member 30, a spring element 76 is arranged in the form of a helical or helical compression spring. On the first part 30a of the guide member 30 of the tool holder 2 is pivotally mounted. The second part 30b of the guide element 30 is pivotally mounted on the machine frame 38. The push rod 34 of the crank drive 36 drives the guide element 30 via the second part 30 b of the guide element 30. The spring element 76 is seated on a piston rod 78 connected to the first part 30a of the guide element 30. The two parts 30a, 30b of the guide element 30 are telescopically designed. A piston and adjusting element 82 is provided, which prestresses the spring element 76 in a variably adjustable manner and guides the first part 30a of the guide element 30 within a bore 86 of the second part 30b of the guide element 30. The sleeve-shaped piston and adjusting element 82 has a smooth jacket surface, so that it can serve as a piston element in the bore 86 of the second part 30b of the guide element 30. The piston and adjusting element 82 and / or the piston rod 78 are in direct contact with the second part 30b of the guide element 30 prior to insertion of the at least one piercing tool 1, so that shortly before and during the piercing of the piercing tool 1 into the bottom 8 a direct force transmission without spring element 76 can take place from the second part 30b of the guide member 30 on the first part 30a of the guide member 30 and vice versa. When punctured piercing tool 1 and further movement of the tillage device 6 in the direction of travel A, the at least one piercing tool 1 is pivoted. This embodiment reduces the risk that the piercing tools 1 draw in the direction of travel A slots in the ground surface too fast further movement of the tillage device.

Claims (17)

  1. A mobile soil working device, comprising
    a machine frame (38),
    a drive (36) for at least one piercing tool (1) which can be lifted and lowered, the piercing tool (1) being operative to pierce the soil (8) and to be withdrawn again,
    a guiding element (30), moveably guided on the machine frame (38), for at least one piercing tool (1), wherein before the piercing the piercing tool (1) is located in a starting position at a predetermined piercing angle,
    a tool holder (2) for the piercing tool (1), which holder is pivotable around a first pivot axis (12) in the guiding element (30) that can be lifted and lowered by said drive in order to allow for the piercing tool (1) to be pivoted relative to the guiding element (30) during engagement with the soil, where, at least after withdrawal of the piercing tool (1) from the soil (8), a restoring moment acting around the first pivot axis (12) is exerted onto the tool holder (2), so that the piercing tool (1) pivots back again into the starting position,
    characterized in
    that the overall center of gravity of the tool holder (2) and said at least one piercing tool (1) is arranged in relation to the first pivot axis (12) in such a manner that the moment of inertia of the tool holder (2) and the piercing tool (1) that counteracts said restoring moment, is compensated or overcompensated.
  2. The soil working device (6) according to claim 1, characterized in that the overall center of gravity of the tool holder (2) and the at least one piercing tool (1) is arranged in relation to the first pivot axis (12) in such a manner that the moment of inertia of the tool holder (2) and the piercing tool (1), counteracting the restoring moment, is overcompensated to the effect that the moment of inertia acting around the first pivot axis (12) forms at least part of the restoring moment.
  3. The soil working device (6) according to claim1, characterized in that the overall center of gravity of the tool holder (2) and the at least one piercing tool (1) is situated on the first pivot axis (12).
  4. The soil working device (6) according to any one of claims 1 to 3, characterized in that an additional mass (44) is coupled to the tool holder (2) and is preferably fastened thereto for common rotation therewith.
  5. The soil working device (6) according to claim 4, characterized in that the overall center of gravity of said additional mass (44), the tool holder (2) and the at least one piercing tool (1) is arranged in relation to the first pivot axis (12) in such a manner that said moment of inertia counteracting the restoring moment is compensated or overcompensated.
  6. The soil working device (6) according to claim 5, characterized in that the overall center of gravity of the additional mass (44), the tool holder (2) and the at least one piercing tool (1) is arranged in relation to the first pivot axis (12) in such a manner that said moment of inertia counteracting the restoring moment is overcompensated to the effect that the moment of inertia acting around the first pivot axis (12) forms at least a part of the restoring moment.
  7. The soil working device (6) according to claim 4, characterized in that the overall center of gravity of the additional mass (44), the tool holder (2) and the at least one piercing tool (1) is situated on the first pivot axis (12).
  8. The soil working device (6) according to any one of the preceding claims, characterized in that the distance, preferably the horizontal distance, of the overall center of gravity of the tool holder (2) and the at least one piercing tool (1), or the distance, preferably the horizontal distance, of the overall center of gravity of the additional mass (44), the tool holder (2) and the at least one piercing tool (1) from the first pivot axis (12), is adjustable.
  9. The soil working device (6) according to claim 8, characterized in that the distance, preferably the horizontal distance, of the overall center of gravity of the tool holder (2) and the at least one piercing tool (1), or the distance, preferably the horizontal distance, of the overall center of gravity of the additional mass (44), the tool holder (2) and the at least one piercing tool (1) from the first pivot axis (12), is adjustable centrally for all tool holders.
  10. The soil working device according to any one of the preceding claims, characterized in that the guiding element (30) is a support arm pivotably supported in a second pivot bearing (26) on the machine frame (38).
  11. The soil working device (6) according to claim 10, characterized in that said support arm is configured for length adjustment against a spring force.
  12. The soil working device according to claim 10 or 11, characterized in that at least one torsion and respectively pressure spring element (70) or a spring damper element (42) is arranged to the side of the support arm, preferably parallel to the support arm, said torsion and respectively pressure spring element (70) or said spring damper element (42) allowing for a pivoting movement of the tool holder (2) around the first pivot axis (12) and, upon release of the engagement with the soil, exerting at least a part of the restoring moment on the tool holder (2) so that the piercing tool (1) after withdrawal from the soil (8) is pivoted back into the starting position again.
  13. The soil working device (6) according to claim 12, characterized in that said torsion and respectively pressure spring element (70) or said spring damper element (42) is arranged on the machine frame (38) in a manner causing it to exert a high restoring moment on the tool holder (2) if the piercing tool (1) is located outside the soil (8), and causing it to exert a small restoring moment on the tool holder (2) if the piercing tool (1) is located in the soil (8).
  14. The soil working device (6) according to any one of claims 1 to 11, characterized in that, between the tool holder (2) and the guiding element (30), a torsion element (48,50,64) is arranged which allows for pivoting movement of the tool holder (2) relative to the guiding element (30) and, upon release of the influence of the force, exerts at least a part of the restoring moment on the tool holder (2), so that the piercing tool (1) after withdrawal from the soil (8) will be pivoted back into the starting position again.
  15. The soil working device according to claim 14, characterized in that said torsion element (48,50,64) consists of at least one elastomeric element, an elastomer-metal compound element (50) or a helically or spirally shaped, metallic torsion spring (48).
  16. The soil working device according to claim 14, characterized in that said torsion element (48,50,64) comprises at least two magnetic elements (60,61,62), said at least two magnetic elements (60,61,62) being oriented relative to each other in a manner causing them to allow for pivoting movement of the tool holder (2) around the first pivot axis (12) and, upon release of the engagement with the soil, to exert at least a part of the restoring moment on the tool holder (2), so that the piercing tool (1) after withdrawal from the soil (8) will be pivoted back into the starting position again.
  17. The soil working device according to claim 16, characterized in that said magnetic elements (60,61,62) consist of permanent magnets or solenoids.
EP07112352.5A 2007-07-12 2007-07-12 Soil cultivation device Active EP2014146B2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP07112352.5A EP2014146B2 (en) 2007-07-12 2007-07-12 Soil cultivation device
AT07112352T ATE544331T1 (en) 2007-07-12 2007-07-12 SOIL TILLING DEVICE
DK07112352.5T DK2014146T4 (en) 2007-07-12 2007-07-12 Soil Treatment Facilities
US12/452,635 US8602120B2 (en) 2007-07-12 2008-07-14 Soil working device
PCT/EP2008/059191 WO2009007466A1 (en) 2007-07-12 2008-07-14 Soil working device
JP2010515531A JP5366223B2 (en) 2007-07-12 2008-07-14 Soil working equipment
CN2008801020344A CN101801171B (en) 2007-07-12 2008-07-14 Soil working device
CA2693653A CA2693653C (en) 2007-07-12 2008-07-14 Soil working device
EP08786143A EP2166829A1 (en) 2007-07-12 2008-07-14 Soil working device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07112352.5A EP2014146B2 (en) 2007-07-12 2007-07-12 Soil cultivation device

Publications (3)

Publication Number Publication Date
EP2014146A1 EP2014146A1 (en) 2009-01-14
EP2014146B1 EP2014146B1 (en) 2012-02-08
EP2014146B2 true EP2014146B2 (en) 2016-03-02

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Application Number Title Priority Date Filing Date
EP07112352.5A Active EP2014146B2 (en) 2007-07-12 2007-07-12 Soil cultivation device
EP08786143A Withdrawn EP2166829A1 (en) 2007-07-12 2008-07-14 Soil working device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08786143A Withdrawn EP2166829A1 (en) 2007-07-12 2008-07-14 Soil working device

Country Status (8)

Country Link
US (1) US8602120B2 (en)
EP (2) EP2014146B2 (en)
JP (1) JP5366223B2 (en)
CN (1) CN101801171B (en)
AT (1) ATE544331T1 (en)
CA (1) CA2693653C (en)
DK (1) DK2014146T4 (en)
WO (1) WO2009007466A1 (en)

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ATE544331T1 (en) 2007-07-12 2012-02-15 Redexim Handel En Expl Mij Bv SOIL TILLING DEVICE
EP2123143B1 (en) * 2008-05-23 2013-11-06 Redexim Handel-en Exploitatie Maatschappij B.V. Soil aerating device and method for pushing penetration tools into soil
JP5399447B2 (en) * 2011-06-28 2014-01-29 順一 濱田 Lawn drilling deep tillage machine
FI124565B (en) * 2012-05-31 2014-10-15 Ponsse Oyj Stabilization of forestry work unit
DE202012010495U1 (en) * 2012-11-05 2014-02-14 Redexim Handel- En Exploitatie Maatschappij B.V. Soil preparation device for creating cavities in a soil
EP2754343B1 (en) * 2013-01-15 2017-11-01 Redexim Handel-en Exploitatie Maatschappij B.V. Mobile soil cultivation device with protective device
EP2966958A4 (en) 2013-03-15 2016-12-14 Textron Inc Tine holding apparatus and method for aearating soil
US9915639B2 (en) * 2014-03-11 2018-03-13 Heriberto Bouza Gonzalez Agricultural device for restoring soil fertility
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CN111937848B (en) * 2020-08-27 2021-07-23 浙江省海洋水产养殖研究所 Prawn is bird repellent device for aquaculture pond

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Also Published As

Publication number Publication date
CA2693653C (en) 2016-08-23
EP2014146A1 (en) 2009-01-14
DK2014146T4 (en) 2016-06-13
JP2010532983A (en) 2010-10-21
JP5366223B2 (en) 2013-12-11
EP2166829A1 (en) 2010-03-31
DK2014146T3 (en) 2012-04-16
WO2009007466A1 (en) 2009-01-15
US20100288518A1 (en) 2010-11-18
ATE544331T1 (en) 2012-02-15
EP2014146B1 (en) 2012-02-08
CN101801171B (en) 2012-07-04
CN101801171A (en) 2010-08-11
US8602120B2 (en) 2013-12-10
CA2693653A1 (en) 2009-01-15

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